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CVE-2018-1311

31
FAUCET Score

CVE-2018-1311 is a high-severity use-after-free vulnerability in the Apache Xerces-C XML parser (versions 3.0.0 to 3.2.3), affecting products from vendors like Apache, Debian, Fedora, Oracle, and Red Hat. This flaw, triggered during external DTD scanning, carries a CVSS score of 8.1, indicating a high potential for impact on confidentiality, integrity, and availability, with a network attack vector and high attack complexity. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting it is not currently a widely targeted vulnerability. The only current mitigation is to disable DTD processing.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, < 3.2.5CPE matchmatch criteria
cpe:2.3:a:apache:xerces-c\+\+:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
7.7CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
9.50%
Probability of exploitation in next 30 days
EPSS Percentile
94.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0950 is in the 75th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

denopatch availablevia llm_extracted
View patch
keraspatch availablevia llm_extracted
View patch
microsoftpatch availablevia msrc
Product: 16941-16820Fixed in: 3.2.3-2
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 3.2.3-2
microsoftpatch availablevia msrc
Product: cm1 xerces-c 3.2.3-2 on CBL Mariner 1.0Fixed in: 3.2.3-2
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 3.2.3-2
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xerces-c-0:3.0.1-21.el6_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: xerces-c-0:3.1.1-10.el7_7
View patch

Vendor Advisories (7)

denollm-deno-b67a3af2ce0be075CRITICAL

HP ThinPro 8.0 SP 9 Security Updates

Jun 17, 2024
kerasllm-keras-7d8c31fee70361dcCRITICAL

HP ThinPro 8.0 SP 9 Security Updates

Jun 17, 2024
denollm-deno-650ac71876afb4f8CRITICAL

HP ThinPro 8.1 SP 2 Security Updates

Apr 12, 2024
kerasllm-keras-d13bbd8768a57997CRITICAL

HP ThinPro 8.1 SP 2 Security Updates

Apr 12, 2024
microsoft2022-Apr/CVE-2018-1311

CVE-2018-1311

Apr 12, 2022
redhatCVE-2018-1311Important

xerces-c: XML parser contains a use-after-free error triggered during the scanning of external DTDs

Dec 16, 2019
microsoft2019-Dec/CVE-2018-1311Important

The Apache Xerces-C 3.0.0 to 3.2.3 XML parser contains a use-after-free error triggered during the scanning of external DTDs. This flaw has not been addressed in the maintained version of the library and has no current mitigation other than to disable DTD processing. This can be accomplished via the DOM using a standard parser feature or via SAX using the XERCES_DISABLE_DTD environment variable.

Dec 10, 2019

References

lists.fedoraproject.org / archives/list/[email protected]/message/AJYZUBGPVWJ7LEHRCMB5XVADQBNGURXD
access.redhat.com / errata/RHSA-2020:0702
Third Party Advisory
access.redhat.com / errata/RHSA-2020:0704
Third Party Advisory
lists.apache.org / thread.html/r48ea463fde218b1e4cc1a1d05770a0cea34de0600b4355315a49226b%40%3Cc-dev.xerces.apache.org%3E
Vendor Advisory
lists.apache.org / thread.html/r90ec105571622a7dc3a43b846c12732d2e563561dfb2f72941625f35%40%3Cc-users.xerces.apache.org%3E
Issue Tracking
lists.apache.org / thread.html/rabbcc0249de1dda70cda96fd9bcff78217be7a57d96e7dcc8cd96646%40%3Cc-users.xerces.apache.org%3E
Issue Tracking
lists.apache.org / thread.html/rfeb8abe36bcca91eb603deef49fbbe46870918830a66328a780b8625%40%3Cc-users.xerces.apache.org%3E
Issue Tracking
lists.debian.org / debian-lts-announce/2020/12/msg00025.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2023/12/msg00027.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/7A6WWL4SWKAVYK6VK5YN7KZP4MZWC7IY
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/AJYZUBGPVWJ7LEHRCMB5XVADQBNGURXD
Mailing ListThird Party Advisory
marc.info
Mailing ListThird Party Advisory
debian.org / security/2020/dsa-4814
Third Party Advisory
oracle.com / security-alerts/cpujan2022.html
PatchThird Party Advisory
openwall.com / lists/oss-security/2024/02/16/1
Mailing ListThird Party Advisory